LG 410G Service Manual page 57

4. TROUBLE SHOOTING
CHECKING FLOW
Voltage MICBIAS of U101
Check the Solder
condition of R214 and
Check the signal level at
Is it about 1.2~1.5V?
Microphone will work
LGE Internal Use Only
START
No
= 2.0V?
Yes
C222,C224
Yes
MICP.
Yes
properly.
Replace U101 or Change the board
No
Re-solder or replace the Component
No
Re-solder or replace the microphone
-54-
- 58 - Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes